package day05;

import java.util.Scanner;

public class Demo11 {
	public static void main(String[] args) {
		// 用变量接收用户输入内容
		// 打印输出之后, 将变量置为空
		
		Scanner sc = new Scanner(System.in);
		
		System.out.println("请输入");
		String str = sc.nextLine();
		System.out.println(str);
		str = null;
		System.out.println(str);
		
	}
}
